Compact Machines version:4.0.0 alpha
Forge version: 35.1.29
I am not using Optifine: I'm using it, but i've tested without and the problem persists
Link to Crashlog: https://pastebin.com/hDH98GLL
Screenshot (if possible): here
There isnt, the game just crashes
Description of the problem including expected versus actual behavior:
I was playing the modpack All The Mods 6 as usual, and started using the mod. Just after I started using, i got a crash and couldnt get in my world again, so re installed the pack (maybe to a newer version) and it worked. Now after 1-2 days, when trying to get in the world, the game just crashes. Tried without the mod and worked fine.
Steps to reproduce:
I dont know if its only my problem, but the only thing i do is try opening the world and the game crashes

Appears to be a duplicate of #438 - where dimension information is not properly loaded, causing null issues on the server side.